Angular 8：检查数组包含组件视图中的字符串值在 IE 中不起作用

Question

I have angular 8 application. I want to check if array contains the given string in component view. I have used Array.includes which work in chrome but IE gives error Object doesn't support property or method 'includes'

Component view Look like:

<div [ngClass]="{'is-invalid': invalidProps?.includes('errorprop')}"> 
  Error message 
</div>

Answer 1

Try to add line below in the polyfills.ts file.

import 'core-js/es6/array';

It may help you to fix your error.

Answer 2

I added below line to polyfills.ts file and it working

import "core-js/es/array";

Thanks for hint.